A pond contains clean water. Which of the following activities will produce the least pollution of water?
swimming in the pond
The correct option is D.
Explanation of correct option:
Explanation of incorrect options:
Option A:
Clothes washing is one of the sources of water pollution as it would discharge detergent and soap, which are harmful chemicals at the time of washing.
Option B:
Animals bathing in a water source could also result in water pollution as animals might be covered with excreta and dust, which would eventually get released into the water body resulting in pollution.
Option C:
Washing of motor vehicles would result in water pollution as motor vehicles generate harmful substances and soot, which will eventually get washed in the water resulting in pollution.
Final answer: Swimming in the pond would produce the least pollution of water.